Final answer:
The number 408.07 rounded to the nearest hundred is 400, as the tens digit '0' is less than 5, indicating that the hundreds place remains unchanged.
Step-by-step explanation:
When rounding to the nearest hundred, we must focus on the hundreds place and the digit to the immediate right of it.
In the number 408.07, '4' is in the hundreds place and '0' is in the tens place.
Because the tens place is less than 5, the number rounded to the nearest hundred does not change the hundreds place value.
Therefore, 408.07 rounded to the nearest hundred stays at 400.